求最大特征值和特征向量，此程序用迭代法。

是学习PCA特征提取的很好的学习资料，AHP层次分析法计算判断矩阵的最大特征值,包括AHP，因子分析，回归分析，聚类分析。- Is a good learning materials to learn PCA feature extraction, Calculate the maximum eigenvalue judgment matrix of AHP, Including AHP, factor analysis, regression analysis, cluster analysi

有循环检测，周期性检测，用于特征降维，特征融合，相关分析等,AHP层次分析法计算判断矩阵的最大特征值。- There are cycle detection, periodic testing, For feature reduction, feature fusion, correlation analysis, Calculate the maximum eigenvalue judgment matrix of AHP.